<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
</head>
<body>
<h1>第一组</h1>
<p style="padding: 0; line-height: 10px; font-size: 30px; background:silver;  font-family:simsun; ">
	<span>p[1]: line-height: 10px; font-size: 30px;</span>
</p>

<p style="padding: 0; line-height: 5px; font-size: 30px; background:silver;  font-family:simsun; ">
	<span >p[2]: line-height: 5px; font-size: 30px;</span>
</p>

<p style="padding: 0; line-height: 0px; font-size: 30px; background:silver;  font-family:simsun; ">
	<span >p[3]: line-height: 0px; font-size: 30px;</span>
</p>

<h1>第二组</h1>
<p style="padding: 0; line-height: 10px; font-size: 12px; background:silver;  font-family:simsun; ">
	<span>p[4]: line-height: 10px; font-size: 12px;</span>
</p>

<p style="padding: 0; line-height: 5px; font-size: 12px; background:silver;  font-family:simsun; ">
	<span>p[5]: line-height: 5px; font-size: 12px;</span>
</p>

<p style="padding: 0; line-height: 0px; font-size: 12px; background:silver;  font-family:simsun; ">
	<span>p[6]: line-height: 0px; font-size: 12px;</span>
</p>
<h1>第三组</h1>
<p style="padding: 0; line-height: 4px; font-size: 5px; background:silver;  font-family:simsun; ">
	<span>p[7]: line-height: 4px; font-size: 5px;</span>
</p>

<p style="padding: 0; line-height: 2px; font-size: 5px; background:silver;  font-family:simsun; ">
	<span>p[8]: line-height: 2px; font-size: 5px;</span>
</p>

<p style="padding: 0; line-height: 0px; font-size: 5px; background:silver;  font-family:simsun; ">
	<span>p[9]: line-height: 0px; font-size: 5px;</span>
</p>
</body>
</html>